1199 HZM 1524 Equipment for testing haze of lenses

Equipment for testing haze of lenses according to ISO 12311,ASTM,ANSI and other standards

Technical features :

· Light source with 55 W halogen lamp ( Std. ll. A )· Special bitelecentric lenses system ( with 4 lenses ) to grant parallel and collimated beam· 150 mm ( 6” ) dia. integrating sphere made by solid Al. , with special Titanium Bioxide and Barium Sulphate painting· Sample holder ( also removable ) able to accommodate up to 70 mm samples with fast clamp · Sample holder is automatically oriented every 90°, driven by a stepper motor · The opening of light trap is actuated by a shutter driven by an electomagnet· The photoreceptors is a Centronics of 100 sq/mm with photopic filter· AD original hardware with ADDON and Smartsensor cards with microprocessor · AD software for motor driving, data acquisition and transmission to a PC using USB port.· •· The procedure is totally automatic and starts using the commands given from the PC keyboard· Required power supply: 230-240 V, 50Hz· Overall dimensions meters : 0,75 x 0,35 X 0,25· Weight: Kg 21

· Software for data acquisition and results calculation based on a PC:· Automatic calibration by pressing F1· Totally automatic measurement procedure by pressing F2 as follows : · Measure of the incident light (τ1) without the specimen in position, without the light trap in position and with the reflectance standard in position.· Measure of the total light transmitted by the specimen (τ2) with the specimen in position, without the light trap in position and with the reflectance standard in position.· Measure of the light scattered by the instrument (τ3) without the specimen in position, with the light trap in position and without the reflectance standard in position.· Measure the light scattered by the instrument and specimen (τ4) with the specimen in position, with the light trap in position and without the reflectance standard in position.· Repeating of step (b) so that four readings are obtained, rotating the specimen between readings by 90°.· Repeating of the step (d) and (e)so that four readings are obtained at the same positions· Calculation of : 1) The average values of τ 2 and τ 4 (τ 2 and τ 4 )· b) The total transmittance according to the equation required by ISO 12311 standardA complete test report is issued using the PC software including the sample ID and required data .